Device for deflecting at least a portion of a cooling fluid lowing axially in an intermediate space which is arranged between a rotor and a stator of a rotating electrical machine

Abstract

A device for deflecting at least a portion of a cooling fluid flowing axially in an intermediate space is arranged between a rotor and a stator of a rotating electrical machine, in particular of a turbogenerator, wherein at least one blade can be arranged on a prespecifiable section of an outer face of the rotor and in the intermediate space, which blade is designed and can be arranged in such a way that a portion of the cooling fluid flowing in the intermediate space can be radially deflected in the direction of the stator by said blade.

The invention claimed is: 
     
       1. A device for deflecting at least a portion of a cooling fluid that is flowing axially in an intermediate space that is arranged between a rotor and a stator of a rotating electrical machine, comprising:
 at least one blade arranged on a predetermined section of an outer face of the rotor and in the intermediate space, said at least one blade arranged in such a manner that a portion of the cooling fluid that is flowing in the intermediate space and into the at least one blade is deflected to flow radially outwardly towards the stator via said at least one blade, 
 at least one connecting element connecting the at least one blade to the rotor, and 
 at least one outlet opening that extends parallel to a longitudinal axis of the rotor arranged on the at least one connecting element such that a portion of the cooling fluid that makes contact with the at least one connecting element can flow axially through said at least one outlet opening. 
 
     
     
       2. The device as claimed in  claim 1 ,
 wherein the at least one blade is embodied as a radial blade, and 
 wherein a portion of the cooling fluid that is flowing in the intermediate space makes contact with said radial blade. 
 
     
     
       3. The device as claimed in  claim 2 , comprising
 two or more blades of the at least one blade arranged on the predetermined section of the rotor distributed over a periphery of the rotor. 
 
     
     
       4. The device as claimed in  claim 1 ,
 wherein the at least one blade and the at least one connecting element are connected to one another so as to form an individual unit. 
 
     
     
       5. The device as claimed in  claim 1 ,
 wherein the at least one blade is a blade of a drum impeller radial blower that is connected to the rotor. 
 
     
     
       6. The device as claimed in  claim 5 ,
 wherein the at least one outlet opening that extends parallel to the longitudinal axis of the rotor is arranged on the drum impeller radial blower such that a portion of the cooling fluid that is flowing in the intermediate space can flow axially through said at least one outlet opening. 
 
     
     
       7. The device as claimed in  claim 1 ,
 wherein the rotating electrical machine comprises a turbogenerator. 
 
     
     
       8. The device as claimed in  claim 1 , wherein the stator further comprises a cooling opening therethrough and disposed to receive cooling fluid redirected by the at least one blade. 
     
     
       9. A method for cooling a rotating electrical machine, said rotating electrical machine comprising a rotor and a stator, the method comprising:
 introducing a cooling fluid into an intermediate space that extends axially between the rotor and the stator, 
 rotating a plurality of blades that are disposed in the intermediate space and secured to a connecting element, wherein the connecting element is secured to an outer face of the rotor, 
 redirecting a portion of the cooling fluid flowing into the plurality of blades to flow radially outward towards the stator, and 
 passing a second portion of the cooling fluid axially through an outlet opening in the connecting element, wherein the outlet opening is disposed radially between the plurality of blades and the rotor and extends axially parallel to a longitudinal axis of the rotor. 
 
     
     
       10. The method as claimed in  claim 9 ,
 wherein the rotating electrical machine comprises a turbogenerator. 
 
     
     
       11. The method as claimed in  claim 9 , further comprising:
 directing the portion of the cooling fluid to a cooling opening located in the stator, and 
 passing the portion of the cooling fluid through the stator via the cooling opening.